'amine-synthesizing' originates from Modern English, specifically a compound of 'amine' and 'synthesize' with the participial suffix '-ing'. 'Amine' referred to chemical derivatives of ammonia, and 'synthesize' comes from Greek roots meaning 'to put together'.

'amine' was coined in 19th-century chemistry from 'ammonia' + the suffix '-ine'; 'synthesize' derives from Greek 'synthesis' (σύνθεσις) meaning 'putting together', which passed into Latin and then Modern English; combining these elements produced the compound verb/noun base 'amine-synthesize', to which English added the participle suffix '-ing' to form 'amine-synthesizing'.

Initially 'amine' specifically named compounds related to ammonia and 'synthesize' broadly meant 'to put together'; over time 'synthesize' acquired the specialized chemical sense 'to produce (a compound) by chemical reaction', so 'amine-synthesizing' now specifically indicates producing amine compounds.